Bicycle seat tube clamp



FIG. 1 is a bottom perspective view of a bicycle seat tube clamp showing my new design;

FIG. 2 is a top perspective view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a right side view thereof;

FIG. 7 is a front view thereof; and,

FIG. 8 is a rear view thereof. 

The ornamental design for a bicycle seat tube clamp, as shown and described. 